astah* UML padSimple to use A great class diagram scratchpad for building models quickly and effectively. Utterly intuitive and frankly a joy to use. Don’t bother to read the older reviews! This is a great app! I’m a lead developer for an open source Java project and I’ve been using the free iPad app for about a month. It was a little difficult to get used to a few things in the beginning, but I’ve become prett
